• facebook-square
  • Twitter App Icon
  • LinkedIn App Icon

© 2014 by GTK. Proudly created with Wix.com

Follow Us


Tel: 617-875-4910

Boston, MA

Connect on LinkedIn

Follow us on Twitter

About Dr. K

Dr. Grayson Kimball

Grayson Kimball is a Sport Psychology Consultant in the Boston area and has his own private consulting practice, GTK Sports. Over the past 15 years, he has been conducting private consultations, sport parenting workshops, and mental skills training seminars for a variety of youth sport, high school, recreational, collegiate, professional, and Olympic level athletes/teams. He has been a certified Sport Psychology Consultant with the Association for Applied Sport Psychology and a member of the United States Olympic Sport Psychology Registry. Grayson is an adjunct faculty member at Northeastern University.


Grayson has served as the Head Coach for the Team Brookline Boston Marathon Charity Team in 2018 and 2019. He has completed 8 marathons and 16 half-marathons, has coached for the Leukemia & Lymphoma Society Boston Marathon Team, and provides sport psychology coaching for numerous marathon charity programs, including the Dana Farber Marathon Challenge. 


A Deadhead for over 25 years, Grayson has collected thousands of live recordings from the Grateful Dead, Jerry Garcia Band, Allman Brothers Band, and many others. He takes great joy in choosing a particular show or a selection of songs to make every run a grateful run.


Check out his list of live music here -